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Energy Lessons 1 And 2
Test Description: HMH Lessons 1 and 2 Review
Instructions: Answer all questions to get your test result.
1) A ball is sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?
A
It is used to make the ball slow down.
B
It is lost as gravitational energy.
C
It is converted to kinetic energy.
D
It is destroyed as the ball moves.
2) A toy robot can walk and talk and runs on batteries. Which type of energy is stored in the batteries?
A
chemical
B
mechanical
C
electrical
D
nuclear
3) How is mechanical energy calculated?
A
by multiplying potential energy and kinetic energy
B
by subtracting potential energy from kinetic energy
C
by adding potential energy and kinetic energy
D
by dividing potential energy by kinetic energy
4) Which of these is an example of the conversion of kinetic energy into gravitational potential energy?
A
a person walking up a hill
B
a person skiing down a hill
C
a car racing around an oval track
D
a person parachuting out of an airplane
5) Which of these statements is an example of energy transfer?
A
a plant using sunlight to produce glucose
B
a child rubbing her hands together to warm them
C
turning on a flashlight to produce a beam of light
D
an open flame heating a pan of water
6) Which term describes the energy that is stored due to the height of an object above the ground?
A
gravitational potential energy
B
mechanical energy
C
kinetic energy
D
chemical energy
7) Which of these has kinetic energy?
A
cars parked in a parking lot
B
a book sitting on a shelf
C
hat and gloves on a table
D
a child kicking a soccer ball
8) Which of these has the most kinetic energy?
A
a 25 kg fish tank sitting on a table
B
a 50 kg boulder suspended from a cliff
C
a 50 g fish swimming in a fish tank
D
a 7,500 kg car parked on a steep hill
9) If KE is kinetic energy and v is velocity, which of these graphs would be a straight line?
A
KE^2 versus v
B
KE versus v^2
C
KE^2 versus v^2
D
KE versus v
10) A sea bird builds its nest on a ledge above the ocean, where it fishes for food. When does the bird have the most potential energy?
A
sitting in its nest 20 m above the ocean
B
flying at 10 m/s 10 m above the ocean
C
swimming on the ocean surface at 2 m/s
D
diving for fish 3 m below the ocean surface
11) Which change would increase the kinetic energy of a moving object the most?
A
reducing the speed by half
B
doubling the speed of the object
C
doubling the mass of the object
D
reducing the mass by half
*select an answer for all questions
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